28639602202 has 8 divisors (see below), whose sum is σ = 42961086612. Its totient is φ = 14319240000.

The previous prime is 28639602197. The next prime is 28639602221. The reversal of 28639602202 is 20220693682.

It can be written as a sum of positive squares in 2 ways, for example, as 27659348721 + 980253481 = 166311^2 + 31309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213549 + ... + 320752.

Almost surely, 2^28639602202 is an apocalyptic number.

28639602202 is a deficient number, since it is larger than the sum of its proper divisors (14321484410).

28639602202 is a wasteful number, since it uses less digits than its factorization.

28639602202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561104.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 28639602202 in words is "twenty-eight billion, six hundred thirty-nine million, six hundred two thousand, two hundred two".